Liquid heater



Patented Dec. 2, 1924.`

l UNITED STATES YPATENT OFFICE.

HARVEY F. MOMICHAEL AND JOSH H. LEE, OF TIMPAS, COLORADO.

LIQUID HEATER.

Application'iled February 18, 1924. Serial No. 693,606.

To all whom t may concern:

Be it known that HARVEY F. MCMIGHAEL and JOSH H. LEE, citizens of the United States, residing at Timpas, in the county of Otero and State of Colorado, have invented certain new and useful Improvements in Liquid Heaters, of which the following is a specification.

This invention relates to heaters for liquid and has more specific reference to an electrical heater of the emersion type whereby oil within crank cases of motor vehicles may be heated or in fact liquid within any form of containers may be heated so as to prevent the freezing or thickening of the same during cold weather.

The primary object of the invention resides in the provision of an electrical heater that may be easily disposed within an open ing in the liquid container and then operated to heat the fluid therein.

An additional object of the invention is to provide a heater of the above character that may be manufactured and marketed at extremely small cost, the same comprising but few parts and these correlated in such a manner as to reduce the possibility of disarrangement to a minimum.

With the foregoing and other objects in view, as the nature of the invention will be better understood, the same comprises the novel form, combination and arrangement of parts hereinafter more fully described,

Ashown in the accompanying drawing and claimed.

In the drawing wherein like reference characters indicate corresponding parte throughout the several views;

Figure 1 is a fragmentary sectional view through a liquid container formed with an opening within which is disposed the main form of electrical heater constructed in accordance with the present invention,

Figure 2 is a detailed vertical sectional. view of this form of heater per se, and

Figure 3 is a view s'imilar to Figure 2 of a slightly modified form of heater.

First having particular reference to Fig- .ures 1 and 2, 5 designates a metal container that is formed with a tapered screw threaded opening 6 and within which is adapted to be threadedly disposed either form of electrical heater constructed in accordance with the present invention.

The form of heater shown in Figure 1 embodies the provision of a metallic screw threaded tapered bushing 7 that is formed at its outer end with a hexagon shaped head 8.

This bushing 7 is provided throughout 60 its length with a central circular shaped opening 9 within which is arranged the relatively elongated hollow neck 10 of an electric coil receiving tube 11 that is of a nonelectrical conducting substance preferably procelain or the like.

Arranged within this tube 11, is an elec'- tric coil 12, one end of which is connected to a contact button 13 that extends through the closed end of saidtube 11 and thatis 70 adapted for contacting with the end wall of a sheet metal rotecting covering 14 of tubular shape. e other end of this protecting covering is open and is formed with a screw threaded extension 15 thatv is adapt- 75 ed to be screw threadedly disposed within an internally screw threaded socket 1G formed at theinner end of said tapered bushing 7 In this instance, this form of heater is to be employed with a battery or the like that has one post grounded to the fluid container 5, and the other post connected to the other end of the coil 12 that extends outwardly through the neck 10 of said coil tube 11 and 35 this preferably ythrough the medium of a hand switch whereupon a closing of the same will complete a circuit to the coil 12 and the heat therefrom will manifestly heat the protecting covering 14 that is emerged 90 within the fluid within the container 5 for thereby effectively heating the same.

The form of the inventlon shown in Figures 1 and 2 is preferably to be employed in the heating of the cylinder oil within the crank case or fly wheel casing of a vehicle engine and in this instance it is of course to be understood that the source of electric supply that is employed may be and preferably is the storage battery of the vehicle.

' In the form of the invention shown in Figure 3, the same is preferably adapted to be employed for the heating of liquids in barrels and the like and in this instance, the same comprises a metal gland 16 flanged 105 Yat its outer end as at 17 and externally@ nected to the gland'll thro the 'opposite ends of through the neck 9 of-sa1dtube and, ro-

u `-ugh the medium of a packing nut 18, IwhichpackingV nut, faswell as the protectin 10 is of a non-con ucting material, pref-l eliably procelain'or'the like. Within this tube 11- is an electric coil 12', which are 'extended vided with. insulation 19. These ends o the coil are'then connected' with any suitable heat proof metal that is respects to the protecting' cov- .,14 of the form of the invention shown However in this inering is internallyV screw threaded for enl though' we have temer.

'gagement over the external screw threads of saidgland 16.

In this form of the invention,l the heater is adapted to be wedged within an opening formed within a barrel or otherliquid con- ItV will thus be seen that we have provided two, highly novel and eilcient forms of-electricfheaters thatl will accomplish all ofthe-'results above attributed, and even herein set -forth the most practical embodiments of the invention with `which we are, at this time familiar, it is nevertheless to be understood that minor chan may be made in the invention without epartin from the spirit and scope of the appende claims.

covering 11 and neck screw-threaded, said screw-threaded end cyhnder covering connectedwith said l plug provided with acentra 'site end of said tube Having thus 'described our invention, what we claim as new anddesire to secure by LetterslPatenthis:

eectric eater com ris' a l formed with'va 1een borg 'pi'lrligidinpgu assageway, a tube of dielectric material ormed with a reduced extensionprovid' sl passageway, the free end thereo aretaining nut connectedzto disposed within said tubeand a. rotecting said tube ,and etachably 2. An electric heater edmprising a closing p bore providin a tube of dielectric material,

a passageway,

being provided with'a reduced ex! said tube sai g passageway, an electric resistance cil disposed within coiliextending throughfsaid neck, the op being provided 'with an o enin through which the opposite 'end of. t e co1 casing surrounding tube in spaced relation, saidcasing: I, electricity conductingv material, said button being in contact therewith, said casin being dtachably connected with the a oresaid P ug f 'l In testimony whereof we ank-signatures.

J DSH H. LEE. v

HARVEY F. MOMICHAEL.

, 'a-reeistance coil,

button con!" 4tens'rgnn forming a neck extending through said tube, one endvof the 

